THE AMERICAN SCIENCE SERIES, 3 
ASTRONOMY, By SiMON Newcomb, Professor in the Johns 
Hopkins University, and Edward S. Holden, Director of 
the Lick Observatory. 
Advanced Course. 8vo. 512 pp. 
To facilitate its use by students of different grades, the sub- 
ject-matter is divided into two classes, distinguished by the size 
of the type. The portions in large type form a complete course 
for the use of those who desire only such a general knowledge 
of the subject as can be acquired without the application of ad- 
vanced mathematics. The portions in small type comprise ad- 
ditions for the use of those students who either desire a more 
detailed and precise knowledge of the subject, or who intend to 
make astronomy a special study. 
From C. A. Young, Pi'ofessor in Princeion College : " I conclude 
that it is decidedly superior to anything else in the market on the 
same subject and designed for the same purpose.** 
Briefer Course. i2mo. 352 pp. 
Aims to furnish a tolerably complete outline of the as- 
tronomy of to-day, in as elementary a shape as will yield satis- 
factory returns for the learner's time and labor. It has been 
abridged from the larger work, not by compressing the same 
matter into less space, but by omitting the details ot practical 
astronomy, thus giving to the descriptive portions a greater 
relative prominence. 
From The Critic: ** The book is in refreshing contrast to the 
productions of the professional schoolbook-makers, who, having only 
a superficial knowledge of the matter in hand, gather their material, 
without sense or discrimination, from all sorts of authorities, and 
present as the result an indigesta inoles, a mass of crudities, not un- 
mixed with errors. The student of this book may feel secure as to 
the correctness of whatever he finds in it. Facts appear as facts, and 
theories and speculations stand for what they are, and are worth." 
From W. B. Graves, Master Scientific Department of Phillips 
Acade?ny : I have used the Briefer Course of Astronomy during the 
past year. It is up to the times, the points are put in a way to inter- 
est the student, and the size of the book makes it easy to go over the 
subject in the time allotted by our schedule." 
From Henry Lefavour, /irz/^ Teacher of Astronomy, Willis ton Semi* 
nary : ** The impression which I formed upon first examination, that 
it was in very many respects the best elementary text-book on the 
subject, has been confirmed by my experience with it in the class- 
room/* ' — 
